二、适当形式填空(单句适当形式)(共10小题;共10分)

　　31. John (work) all day yesterday.

　　32. I think my father (come) back the day after tomorrow.

　　33. I (write) a letter at ten last night.

　　34. My twin brother often (dress) up as a cool boy.

　　35. --- she (practice) her guitar yesterday?

　　--- No, she (do).

　　36. It was 7 o'clock. My father (wash) clothes.

　　37. Put the fish in the fridge, or it (go) bad in hot weather.

　　38. Mary and her mother (sing) an English song at the coming party?

　　39. His cousin Mary (not come) yesterday because of her illness.

　　40. --- you (listen) to music now?

　　--- Yes, I am.